Metallic window-sash.



NTED STATES ATNT no.

WILLIAM E. ULRICH, or DETROIT, MICHIGAN.

METALLIC wINnow-sAsH.

To all whom it may concern:

Be it known that I, WVILLIAM. E. citizen of the. United States, residingat De troit, county of Wayne, State of Michigan, have invented a certainnew and useful Improvement in Metallic \Vindow-Sash, and declare thefollowing'to be a full, clear, and exact description of the same, suchas will enable others skilled in the art to which it pertains to makeand use the same, reference being had to the accompanying drawings,

which form a part of this specification.

My invention relates-to an improvement in metallic window sashes, andparticularly themeans of interlocking the vertical and cross mullionswith each other,the object being to so construct the interlockingportion of these cross members'thatthey may be engaged with each otherand securely locked without distorting the regularity of the bars, thesymmetrical appearance of the sash being'thereby preserved.

A further object is to provide means whereby cross and vertical mullionsof the same relative size may be interlocked, without either presentinga bulged appearance at the point of intersection,the objection to sashas now manufactured employing mullions of the same eross-sectional area.

' Other advantages and improvements will hereafter appear. v

I11 the drawings accompanying this speci- A fication: Figure 1 is anelevation of the metallic sash. Fig.2 is a perspective view of afragmentary portion of a cross mullion notched to receive the engagingmember. F 3 is a similar view of the vertical mullion. Fig. l is afragmentary perspective view of the cross and vertical mullionsinterlocked.

*leferring now to the lette-fs of reference placed upon the drawings :Ais the frame of the sash mortised toreceive the ends of the cross andvertical mullions and to which they are riveted.

The mullion A is punched as indicated at A forthe passage -of themullion B in turn notched at b, b, to receive the connecting members a,a, bridging the opening punched in the cross member A. I

a a are lugs formed by shearing the web A backward from thesc'entralopening A a suitable distance as indicated at a in Figs. 2 and 4,sufiicient metal being cut away. from the ends of the lugs to admit ofthe passage of the web portion B of the member B.

4 S pecification of Letters Patent.

ULRICH,

' Patented May 2, 1911. Application filed August 3, 1910. Serial No.575,296.

The cross member a is bent slightly as indi members a, a, are forcedinto the notches Z51), of the connecting mullion making them flush withthe top and bottom of the intersecting member. The lugs a are then bentback (as shown in F at) in line with the main body of the web portionwhereby the mullions A and B are securely locked together.

A great advantage is gained in the strength and appearance of the sashby the use of this invention as I am enabled to employ cross andvertical mullions of the same size,the surfaces of the intersectingmullions being flush with eaeh other when interlocked,a much handsomerappearance being thereby obtained than is possible in constructionswhere it becomes necessary to form a hump at each intersection in orderto rovide a assa e for the cross members or in constructions requiringone set of mullions to be larger than the intersecting members.

Having thus described my invention, what I claim is 1. Two sets of'crossjointed bars of equal size in cross section, one set of bars formed withbridged apertures and slit to form lugs adapted to be bent to receiveand lock the cross members, and the cross members notched on both-edgesto receive the portions bridging the openings of theother set ofmembers, whereby the edges of both sets of bars are flush when assembledand locked.

2. Two sets of cross 'jointed bars of equal size in cross-section, oneset punched with openings for the passage of intersecting bars, aportion being left on either side to bridge said openings, lugs integralwith the bars formed by slitting the metal backward a suitable distancefrom the openings, and the intersecting bars notched at both of theiredges to receive the po tions bridging the openings of the first namedmembers, the lugs of said first named members bent to the plane of theirbody portion when the cross and intersecting bars are assembled and theportions bridging the openings lodged in the notches of the othermember, whereby the said cross bars are interlocke 3. In a window sash,the frame, two sets of cross jointed bars of equal size in cross sectionsecured to the frame, one setof bars formed with bridged apertures andslit to form lugs adapted to be bent to receive and In testimonywhereofI sign this specifi- ]ice]: the cfiogs' meilbeilrs; 32d the crossmellxlk cation in the presenee of two witnesses.

ers note e on 0t e es to receive. 1; e

portions bridging the opening'sef the other W L A ULRICH 5 setofmembers, whereby the edges of bbth Witnesses: I sets of bars are flushwhen assembled and CHAS. W. (arUs'riavus,

locked. GRACE E.'Wi"N K0 01 f Cbpies of this patent may beiobteined forfive lig ts each, by addressing-the Commissioner of I'atents,

. Washington, D. 0": 1

